Abstract: A sealed roller bearing having a double row of tapered rollers is disclosed. The bearing is insertable into and retainable within a rigidly mounted pillow housing such as a block casting or the like, such that the orientation of the bearing or flange is independent from the orientation of the housing. This self-aligning bearing is replaceable, without removing the housing from its mounting, and the dimensions of the bearing and housing are such that the assembly can be installed in place of existing non-self-aligning or fixed housings without modification of the installation site. Generally the fixed housing-bearing assemblies are small, compact and of relatively few parts. The assembly disclosed is compact, small and of relatively few parts, yet is fully self-aligning.